20333442 has 8 divisors (see below), whose sum is σ = 40666896. Its totient is φ = 6777812.

The previous prime is 20333407. The next prime is 20333459. The reversal of 20333442 is 24433302.

It is a sphenic number, since it is the product of 3 distinct primes.

20333442 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1694448 + ... + 1694459.

It is an arithmetic number, because the mean of its divisors is an integer number (5083362).

Almost surely, 2^20333442 is an apocalyptic number.

20333442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20333442 is a wasteful number, since it uses less digits than its factorization.

20333442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388912.

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 20333442 is about 4509.2618021135. The cubic root of 20333442 is about 272.9419565581.

Adding to 20333442 its reverse (24433302), we get a palindrome (44766744).

The spelling of 20333442 in words is "twenty million, three hundred thirty-three thousand, four hundred forty-two".